\begin{tikzpicture}[scale=0.3]
    \draw (0, 0) -- (0, 20);
    \foreach \y in {1, ..., 19} {
        \draw (-0.3, \y) -- (0, \y);
    }
    \foreach \y in {0, 10, 20} {
        \draw (-0.5, \y) -- (0, \y);
    }
    \foreach \y/\text in {0/1.5, 10/1.6, 20/1.7} {
        \draw (-0.3, \y) node [left] {\tiny $\text$};
    }
    \filldraw [pattern=north east lines, thick] (0, 5) rectangle (0.5, 15);

    \foreach \y/\text in {5/1.55, 15/1.65} {
        \draw (0.5, \y) node [right] {\tiny $\text$};
    }
\end{tikzpicture}
